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| 型號： | 9S12H256BDGV1 |
| 英文描述： | 9S12H256B Device Guide |
| 中文描述： | 9S12H256B設(shè)備指南 |
| 文件頁數(shù)： | 91/130頁 |
| 文件大?。?/td> | 2171K |
| 代理商： | 9S12H256BDGV1 |
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greatest risk when the MCU is not consuming power; e.g. if no system clock is present, or if clock rate is
very low which would reduce overall power consumption.
A.1.5 Absolute Maximum Ratings
Absolute maximum ratings are stress ratings only. A functional operation under or outside those maxima
is not guaranteed. Stress beyond those limits may affect the reliability or cause permanent damage of the
device.
This device contains circuitry protecting against damage due to high static voltage or electrical fields;
however, it is advised that normal precautions be taken to avoid application of any voltages higher than
maximum-rated voltages to this high-impedance circuit. Reliability of operation is enhanced if unused
inputs are tied to an appropriate logic voltage level (e.g., either V
SS5
or V
DD5
).
Table A-1 Absolute Maximum Ratings
1
NOTES
:
1. Beyond absolute maximum ratings device might be damaged.
2. The device contains an internal voltage regulator to generate the logic and PLL supply out of the I/O supply.
The absolute maximum ratings apply when the device is powered from an external source.
3. All digital I/O pins are internally clamped to V
SSX1/2
and V
DDX1/2
, V
SSM
and V
DDM
or V
SSA
and V
DDA
.
4. Ports PU, PV, PW are internally clamped to V
SSM
and V
DDM
.
Num
Rating
Symbol
Min
Max
Unit
1
I/O, Regulator and Analog Supply Voltage
V
DD5
–0.3
6.0
V
2
Digital Logic Supply Voltage
2
V
DD
–0.3
3.0
V
3
PLL Supply Voltage
2
V
DDPLL
–0.3
3.0
V
4
Voltage difference VDDX1 to VDDX2 to VDDM and
VDDA
VDDX
–0.3
0.3
V
5
Voltage difference VSSX to VSSR and VSSA
VSSX
–0.3
0.3
V
6
Digital I/O Input Voltage
V
IN
–0.3
6.0
V
7
Analog Reference
V
RH,
V
RL
–0.3
6.0
V
8
XFC, EXTAL, XTAL inputs
V
ILV
–0.3
3.0
V
9
TEST input
V
TEST
–0.3
10.0
V
10
Instantaneous Maximum Current
Single pin limit for all digital I/O pins except PU, PV
and PW
3
I
D
–25
+25
mA
11
Instantaneous Maximum Current
Single pin limit for Port PU, PV and PW
4
I
D
–55
+55
mA
12
Instantaneous Maximum Current
Single pin limit for XFC, EXTAL, XTAL
5
I
DL
–25
+25
mA
13
Instantaneous Maximum Current
Single pin limit for TEST
6
I
DT
–0.25
0
mA
14
Storage Temperature Range
T
stg
– 65
155
°
C
F
Freescale Semiconductor, Inc.
For More Information On This Product,
Go to: www.freescale.com
n
.
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